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Date: Fri, 29 Aug 2014 20:41:38 -0700 (PDT) From: David Miller <davem@...emloft.net> To: therbert@...gle.com Cc: netdev@...r.kernel.org Subject: Re: [PATCH v2 net-next 0/8] net: Checksum offload changes - Part VI From: Tom Herbert <therbert@...gle.com> Date: Wed, 27 Aug 2014 21:26:27 -0700 (PDT) > I am working on overhauling RX checksum offload. Goals of this effort > are: > > - Specify what exactly it means when driver returns CHECKSUM_UNNECESSARY > - Preserve CHECKSUM_COMPLETE through encapsulation layers > - Don't do skb_checksum more than once per packet > - Unify GRO and non-GRO csum verification as much as possible > - Unify the checksum functions (checksum_init) > - Simplify code > > What is in this sixth patch set: > > - Clarify the specific requirements of devices returning > CHECKSUM_UNNECESSARY (comments in skbuff.h). > - Add csum_level field to skbuff. This is used to express how > many checksums are covered by CHECKSUM_UNNECESSARY (stores n - 1). > - Change __skb_checksum_validate_needed to "consume" each checksum > as indicated by csum_level as layers of the the packet are parsed. > - Remove skb_pop_rcv_encapsulation, no longer needed in the new > csum_level model. > - Allow GRO path to "consume" checksums provided in CHECKSUM_UNNECESSARY > and to report new verfied checksums for use in normal path fallback. > - Add proper support to SCTP to accept CHECKSUM_UNNECESSARY to validate > header CRC. > - Modify drivers to set skb->csum_level instead of setting > skb->encapsulation to indicate validation of an encapsulated > checksum on receive. > > v2: > > Allocate a new 16 bits for flags in skbuff. Series applied, thanks Tom. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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